This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The radiocarbon content of 14C decreases after the death of a living system with a half-life of 5730 ... (Read 97 times)

corkyiscool3328

  • Hero Member
  • *****
  • Posts: 539
on: Jul 28, 2018
The radiocarbon content of 14C decreases after the death of a living system with a half-life of 5730 y. If an archaeologist working a dig finds an ancient firepit containing some partially consumed firewood and the wood contains only 12.5 percent of the 14C content of an equal carbon sample from a present-day tree, what is the age of the ancient site?

Question 2

The half-life of 131I is 8 days. On a certain day, the activity of an 131I sample is 6.4 mCi. What is its activity 40 days later?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

izzat

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Jul 28, 2018
Answer to Question 1

17 190 years

Answer to Question 2

200 mCi


corkyiscool3328

  • Member
  • Posts: 539
Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

TheNamesImani

  • Member
  • Posts: 334
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

« previous next »
 

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Did you know?

Anesthesia awareness is a potentially disturbing adverse effect wherein patients who have been paralyzed with muscle relaxants may awaken. They may be aware of their surroundings but unable to communicate or move. Neurologic monitoring equipment that helps to more closely check the patient's anesthesia stages is now available to avoid the occurrence of anesthesia awareness.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

GI System GI System
HIV-positive men with a high number of life stressors progress more quickly to AIDS than those with ... HIV-positive men with a high number of life stressors progress more quickly to AIDS than those with ...
Chrysler recommends that the bleeder valve be opened whenever refilling the cooling system. Chrysler recommends that the bleeder valve be opened whenever refilling the cooling system.
Typical wiring diagram of a V-6 distributorless (direct fire) ignition system. Typical wiring diagram of a V-6 distributorless (direct fire) ignition system.
A typical port fuel-injected system showing a vacuum-controlled fuel-pressure regulator. A typical port fuel-injected system showing a vacuum-controlled fuel-pressure regulator.
Function divisions of nervous system Function divisions of nervous system
Video: Miller's reaction chamber experiment Animation

For a complete list of videos, visit our video library